Où nous rencontrons
This literally translates to "where we meet," and is used in a general sense.
Here are some other ways to say it depending on the context:
* Où se trouve le point de rendez-vous? (Where is the meeting point?)
* Quel est l'endroit de notre rendez-vous? (What is the place of our meeting?)
* Où est-ce que nous nous retrouvons? (Where do we meet up?)
It's important to choose the appropriate phrase based on the situation.